Containing At Least Two Chemically Different Strand Or Fiber Materials Patents (Class 442/403)
  • Patent number: 6177370
    Abstract: The present invention desirably provides a fabric including a synthetic fiber structure first zone, a synthetic fiber structure second zone, and a short fiber third zone. The first zone may include a spunbond web layer and a meltblown web layer. The synthetic fiber structure second zone may be positioned proximate to the synthetic fiber structure first zone and the short fiber third zone may be positioned substantially between the first and second zones. Desirably, the first and second zones are entwined.
    Type: Grant
    Filed: September 29, 1998
    Date of Patent: January 23, 2001
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Henry Skoog, Fred R. Radwanski, Terry R. Cleveland, Frances W. Mayfield, Lawrence M. Brown
  • Patent number: 6159882
    Abstract: Nonwoven fibrous webs having substantial strength in the direction normal to their planes and the preparation of such webs.
    Type: Grant
    Filed: September 1, 1998
    Date of Patent: December 12, 2000
    Assignee: Boricel Corporation
    Inventors: James Harvey Kean, Tod Mitchell Kean, Kenneth Roger Williams
  • Patent number: 6156681
    Abstract: To provide various members such as filter cloth for dust collection which assures small pressure loss and easy shaking down of dust particles and is excellent in friction property and mechanical strength, sliding member excellent in sliding property, water repellent member excellent in water repellency, non-sticking member excellent in non-sticking property and member for supplying mold releasing agent in electrophotographic apparatuses which is excellent in air permeability, heat resistance and oil resistance, and provide a multilayered felt used therefor and a process for producing the multilayered felt. The multilayered felt is obtained by placing a layer of a web comprising polytetrafluoroethylene staple fibers on at least one surface of a felt and then joining the polytetrafluoroethylene staple fibers and fibers which form the felt by intermingling through water jet needling and/or needle punching.
    Type: Grant
    Filed: July 16, 1998
    Date of Patent: December 5, 2000
    Assignee: Daikin Industries, Ltd.
    Inventors: Shinji Tamaru, Katsutoshi Yamamoto, Jun Asano
  • Patent number: 6087279
    Abstract: A textile surface-area material used for cleaning, having a non-woven material and structures raised over the non-woven material. The structures are on both sides of the surface-area material. The structures can be full-surface or partial surfaces, and the base non-woven material can have structures, staggered on both sides, formed by structure needling. Spacings can be maintained between the structures which corresponds at least to a dimension of the structure on the opposite side. The non-woven can have at least two layers, laminated together, of a non-woven material provided on one side with structures.
    Type: Grant
    Filed: March 12, 1998
    Date of Patent: July 11, 2000
    Assignee: Firma Carl Freudenberg
    Inventor: Heinrich Hans Laun
  • Patent number: 6066388
    Abstract: A nonwoven (1) comprising two outer fiber layers (3, 4) and at least one inner fiber layer (2) having a different composition from that of the outer layers (3, 4). The nonwoven (1) comprises structural fibers (7, 8) and binding fibers (5, 6), said binding fibers (5, 6) at least partially consisting of a polymer with a lower melting point than the structural fibers (7, 8). Said nonwoven (1) is densified by needling on both sides to a given depth while leaving an undensified central region. A method for producing the nonwoven is also disclosed.
    Type: Grant
    Filed: September 11, 1997
    Date of Patent: May 23, 2000
    Inventor: Jozef Van Kerrebrouck
  • Patent number: 6024818
    Abstract: A method for manufacturing a rigid fiber composite material and the product thereof created by needling a composite of a non-woven blend of first fibers with a initial melting point with one or more other fibers with higher melting points that are interposed between two interentangled non-woven layers of the first fibers and then heating this composite to a level above the melting point of the first fibers forming a plasticized structure.
    Type: Grant
    Filed: December 21, 1992
    Date of Patent: February 15, 2000
    Inventors: Samuel Eugene Dunson, Stafford Reade Brooke, III
  • Patent number: 5928973
    Abstract: A non-woven fabric formed from a blend of lyocell fibers and polyester fibers has good loftiness and softness, low lint level, improved wet strength, good working properties as well as fluid retention properties.
    Type: Grant
    Filed: September 29, 1997
    Date of Patent: July 27, 1999
    Assignee: American Nonwovens Corporation
    Inventors: Mason B. Daniel, Erman L. Creekmore, Jeffery A. Hedrick
  • Patent number: 5902663
    Abstract: A low-stretch and dimensionally stable floor covering (1) comprising polymer-containing pile material (2) which is retained to a polymer-containing primary backing (3), to the back of which an underlying secondary backing layer (5) is retained by means of an interleafing adhesive layer (4). The secondary backing layer (5) comprises a needled fibre structure of thermoplastic, polymer-containing, continuous or staple fibres being inter-fixated by heating. The adhesive layer (4) comprises an organic, polymer-containing binder which is activated by heat application. According to the invention, at least the secondary backing layer and/or the binder layer comprise a substantially re-usable material. After being formed, the carpet is wound onto so-called broadloom rollers and can, if desired, be cut partially into carpet tiles. Thus, carpet tiles and broadloom carpets can be manufactured in the same production process.
    Type: Grant
    Filed: November 3, 1997
    Date of Patent: May 11, 1999
    Assignee: Fibertex A/S
    Inventors: Knud Erik Justesen, Lars Valb.ae butted.k Jessen, J.o slashed.rgen Bech Madsen, Mogens Ovesen Nygaard
  • Patent number: 5879344
    Abstract: A composite nonwoven material includes a layer made of a nonwoven material which is permeable to body fluids and a sheet of carded synthetic fibers permeable to body fluids. The carded fiber sheet is bonded to the nonwoven layer solely by needling. An absorbent article of hygiene also includes the composite nonwoven material.
    Type: Grant
    Filed: July 26, 1996
    Date of Patent: March 9, 1999
    Assignee: Peadouce
    Inventor: Jean-Pierre Koczab
  • Patent number: 5877099
    Abstract: A web, formed from dielectric fibers and non-dielectric fibers, which has been subjected to corona discharge to improve the particulate filtration properties of the web is provided. The dielectric and non-dielectric fibers may be intermingled within the web such that the distribution of the dielectric and non-dielectric fibers within the web is generally uniform. In one embodiment, the dielectric fibers may be formed from a thermoplastic polymer, and particularly polyolefin and the non-dielectric fibers may be formed from cellulose, and particularly wood pulp.
    Type: Grant
    Filed: January 27, 1997
    Date of Patent: March 2, 1999
    Inventor: Bernard Cohen
  • Patent number: 5817403
    Abstract: A nonwoven fabric characterized in that it contains:1) a fiber comprising a copolymer of propylene and ethylene; and2) a fiber comprising a polypropylene homopolymer is disclosed.
    Type: Grant
    Filed: October 9, 1996
    Date of Patent: October 6, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Emile M. Gillyns, Victor L. E. Paquay, Joseph A. Rausch
  • Patent number: 5807370
    Abstract: A liquid-absorbing sheet material is prepared by spraying fibers of a molten liquid conveyable material onto a surface of a one- or two-layer fabric base material while applying a vacuum to the opposite surface. The fibers of the liquid conveyable material permeate the one- or two-layer base material.
    Type: Grant
    Filed: January 22, 1997
    Date of Patent: September 15, 1998
    Assignee: Uni-Charm Corporation
    Inventors: Takamitsu Igaue, Tsutomu Kido, Ryohei Sakakibara, Masaharu Sugie
  • Patent number: 5801107
    Abstract: Disclosed is a liquid transport material composed of a pulp fibers hydraulically needled into a nonwoven fibrous structure adapted to have a liquid transport value of at least 12 grams of liquid per gram of material over 30 minutes. The liquid transport material may contain up to about 50 percent, by weight, short staple length fibers as well as effective amounts of various particulates. The liquid transport material may be used as a liquid transport component of an absorbent structure which may be part of, for example, a personal care product. Also disclosed is a process of making a liquid transport material utilizing hydraulic needling techniques.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: September 1, 1998
    Assignee: Kimberly-Clark Corporation
    Inventors: Cherie Hartman Everhart, Ann Louise McCormack, Debra Nell Welchel
  • Patent number: 5744408
    Abstract: An improved article of manufacture and method thereof utilizing a fibrous structure of initially discrete layers, each having first and second sides. At least one side of each layer is rough and the structure has a shrinkage of no more than about 2 percent. The structure is impregnated with a thermoplastic-type polymeric material, and in the final structure there is no visible layer separation.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: April 28, 1998
    Inventor: Robert J. Rossi
  • Patent number: 5677028
    Abstract: An absorbent material and method for making same comprising a fiber web, including a fiber blend comprising from about 50 to about 75 weight percent of a fiber having fineness less than about 3 denier and from about 25 to about 50 weight percent of a fiber having fineness ranging from about 3 to about 5 denier wherein the fiber web is bound together by fiber bundles transverse to the plane of the web. The fiber blend may further comprise from about 3 to about 7 percent by weight of a fiber having fineness greater than about 5 denier. The fibers comprising the fiber blend may be entirely hydrophobic, or the about 3 to about 5 denier fiber may be hydrophilic. The absorbent material exhibits a high degree of absorption and fluid retention and does not wet back even under compression. The transverse fiber bundles formed during the mechanical bonding of the web function as wicks for transferring fluid from the surface of the material to the inner portion of the material.
    Type: Grant
    Filed: April 9, 1996
    Date of Patent: October 14, 1997
    Assignee: Wearever Health Care Products, LLC
    Inventor: Joseph A. Ravella
  • Patent number: 5629005
    Abstract: An absorbent material suitable for use as a medical or hygienic absorbent and comprises a non-woven fibre sheet having dense surface layers 10 and between these layers a less dense region where most of the fibres extend in the plane of the sheet. Transversely extending fibres 16 help to bind the material, the fibres also being bonded to some extent by a hot melt bonding material, e.g. core/sheath-type bi-component fibres. The material is made by forming a blend of fibres, including a minor weight of hot melt fibres, by cross-lapping a plurality of layers 14 to form a web, subjecting the web to needling at low punch density with penetration through the web, thereafter subjecting surface regions 10 of the web to higher punch density needling to form the dense surface layer 10 at each face from the web. The web is then heated, e.g.
    Type: Grant
    Filed: March 14, 1996
    Date of Patent: May 13, 1997
    Assignee: British United Shoe Machinery Limited
    Inventors: Nigel J. Brassington, Jean Welburn